Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: mresistor on August 29, 2020, 04:02:59 pm

Title: rectifier diodes in AA270 twin
Post by: mresistor on August 29, 2020, 04:02:59 pm

Are two 1N4007 diodes in series good enough to replace each leg of the PT secondary HV AC in the amps rectifier?   Thanks


https://el34world.com/charts/Schematics/files/Fender/Fender_twin_reverb_aa270_schem.pdf (https://el34world.com/charts/Schematics/files/Fender/Fender_twin_reverb_aa270_schem.pdf)

Title: Re: rectifier diodes in AA270 twin
Post by: shooter on August 29, 2020, 04:36:39 pm

don't see a problem using 2 07's

Title: Re: rectifier diodes in AA270 twin
Post by: DummyLoad on August 29, 2020, 04:42:54 pm

for 4 x 6L6 use a quad of 1N5408s. 2 in series for each primary phase (leg).   

--pete

Title: Re: rectifier diodes in AA270 twin
Post by: mresistor on August 29, 2020, 05:03:50 pm

thank you ..   


5408s it is   

Title: Re: rectifier diodes in AA270 twin
Post by: shooter on August 29, 2020, 05:16:41 pm

 :BangHead:
when i opened your link it was zoomed to only 2 6L6's  :think1:

Title: Re: rectifier diodes in AA270 twin
Post by: pdf64 on August 31, 2020, 10:10:42 am

Quote from: mresistor on August 29, 2020, 05:03:50 pm

...5408s it is

I tried that as an upgrade once; note that the leads of 3A diodes can be much thicker than those of 1A types, so getting 2 into an eyelet can be a struggle.